Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh llythyren
Welsh llythyr (affix)
Welsh -en (affix)

Breton lizherenn (cognate)
Welsh llythyrennau (affix)
Welsh priflythyren (affix)
Welsh llythrennedd (affix)
Welsh llythrennau (affix)
Welsh llythrennog (affix)
Welsh llythrennol (affix)
Welsh llythrennu (affix)